Oil-separator and automatic regulating-valve for refrigerating systems.



UNITED STATES HERMANN A MAsoI-IMEYER, oF

PATENT OFFICE.

MILWAUKEE, WISCONSIN, ASSIGNOR. OF ONE- FIFTH TO JOHN A. HILL, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent N o. 664,960, dated January 1, 1901.

Application filed Septembe; 5,1900. Serial No. 29.046. (No model.) I

T aZZ lwhom, it may concern:

` Be it'kn'own that `I, HERMANN MASQUE- MEYER, of Milwaukee, in the county of Mil-v waukee and State of Wisconsin, have inventv ed a new and useful Improvementin Oil-Separators and Automatic Regu latin g-Valves for v Refrigerating Systems, of which the following isa description, referencebeing had to the accompanying drawings, which are a part 1o ofthis specification. i

My invention has relation to improvements in oil-separators and automatic; regulatingvalves for refrigerating systems.

It is a well-known fact to thos'e'familiar with refrigeration that in refrigerating machinery the liquid ammonia will take up lubricating-oil and carry the same along therewith. This necessarily is extremely objectionable. To guard against this, expansion 2o cocks or valves have been provided; but these are objectionable, owing to the expense attendant upon their use. Y

It is the primary object "of my invention,

' therefore, to provide an improved and inex-` pensive arrangement for preventing the oil from passing into the refrigerat-ing-pipes.

With this primary object andother incidental objects in view theinvention consists Y of the devices and parts or their equivalents, 3o as hereinafter, set forth. j

In the accompanying drawings, Figure 1 is an elevation of myinvention with the casing in section and other parts in section and broken away, and Fig. 2 is a section on the line 2 2 of Fig. 1.

Referring to the drawings, the numeral 3 indicates a casing of any desirable and suitable form of construction, preferably of the cylindrical form shown in the drawings. One

4o of the side pieces 4 of this casing is detachably connected by means of screws 5, engaging registering flanges 6 6. The side piece 4 has projecting outwardly therefrom a tubular interiorly-threaded extension '7, the inner threads being engaged by the threaded inner end of a spindle 8, said spindle being provided on its outer end with a hand-wheel 9 for convenience in turning the same. A coiled spring 10 is arranged within the tube 7, said -5o spring being interposed between the inner end of the spindle and the plate 11, arranged- .openings 30.

within the'c'asing, the said plate having a short stud 12 extending therefrom into the coils of the spring, vso as to hold the spring in engagement with a fixed point of the plate.

the casing and into said casing for a desired distance. ,This pipe l5 is provided on its Vunder side with a valve-openingl, which is regulated by means of a valve 17. Any desirable form of valve-opening and valve may be employed; but I prefer to make the valveopening of conical or taperingl form and the upper end of the valve of a corresponding 7o form.

Arranged adjacent to the diaphragm 13 is avalve-actuating arm 18. ,The lower portion of this'arin is connected to the upper endof a flat spring 19, said spring forming. the pivot upon which the armswings. From its lower extremity the arm has a projection 20 at right angles thereto, and this projection is. provided,A with a threaded opening 2l. The threaded opening is engaged bya short screw 8o 22, and the upper end of this screw'is provided with a socket 23, iuwhich fits a ball 24, formed on the lower end of the valve 17. A coiled spring 25 exerts pressure against the upper en d of the arm 18. .The spring is maintained in position by means of two studslv 26 and 27, the former extending from the fixed side of the casing into the-end of the spring Vand the latter extending from the arm 18 into the opposite end of the spring. 9o

Across the upper end of the interior of the casing extends a plate 28. In the drawings a portion of the surface of this plate is shown as corrugated. If preferred, the entire surface of said plate may be corrugated. Be- 95,

low the en d of this plate is an yoil-receptacle 29, provided in its Ybottom with a series,A of

From the under sid-e of the casing extends an oil-pipe 31, said pipe connecting with a roo bulb 32, which bulb has another pipe 373 leading therefrom.

From the upper's'ide of the casing extends an ammonia-discharge pipe 34:.

by the spindle 8 that its pressure will normally exceed the combined pressure of lthel spring 25 and the am inonia-gas in the casing. This therefore will cause a pressure on the plate 11 and diaphragm 13, and thereby cause a turning of the Valve-actuating arm in a direction to draw the valve 17 downwardly, so as not to close the valve-opening entirely. rlhe liquid ammonia passes through the pipe 14 and enters the pipe 15,' and by reason of the cold generated lby the pressure the liquid ammonia is converted into a gaseous vapor and passes through the contracted Valveopening and into the casing. The oil which may have passed into the pipe 15 is free to flow through the valve-opening t-o the bottom of the casing, and thence passes by way of of the pipe 31 into the bulb 32, being nally discharged from said bulb through the pipe 33. It by any chance oil should get into the upper portion ot the casing, such oil will be caught by the corrugated plate 28 and will pass from said plate into the oil-receptacle 29, thence through the opening 30 of said receptacle to the bottom ot' the casing, and thence out through the pipe 31. The gaseous ammonia is of course free to pass out of the casing through the pipe 374. It at any time the combined pressure of the spring 25 and the gaseous vapor in the casing should exceed the pressure of the spring 10, then the Valve-actuating arm 18 will be acted upon in a direction to cause the valve to close or further restrict the valve-opening and remain in that position until such time as the pressure of the spring 10 again exceeds the combined pressure of the spring25 and the ammoniagas in the casing.

From the above description it will be seen that the device automatically adjusts itself at all times in accordance with the pressure, and a most eicient arrangement is provided for preventing the oil from passing into the refrigerating-pipes.

That I claim as my invention is The combination of a casing, an inlet-pipe leading into the casing, said pipe provided with a valve-opening, an ammonia-outlet pipe from the casing, an oil-discharge pipe from.

the bottom of the casing, a valve for regulating the valve-opening, a valve-actuating arm', an upwardly-extending spring" to which the lower end of the valve-actuating arm is connected and forming a yielding pivot upon which the arm swings, and a yielding diaphragm acting upon the valve-actuating arm, the space between said diaphragm and the side of the casing forming a chamber into which the ammonia-gas is received, and said diaphragm adapted .to be subjected to pressure upon opposite sides thereof, the pressure upon the side facing the ammonia-chamber being normally less than the pressure upon the opposite side, whereby the valve-actuating arm is caused to move the valve in a direction to open the valve-opening, but when the pressure in the ammonia-chamber against the side of the diaphragm facing said chamber exceeds the pressure upon the opposite side of said diaphragm, then the valve-actuating arm causes the valve to move in a direction to close or further restrict the valveopening.

In testimony whereof I aiiix my signature in presence of twowtnesses.

HERMANN MASCI-IMEYER.

Witnesses:

A. L. MoRsELL, ANNA V. FAUsT. 

